ASTROSAT CZTI

Data Quality Report

Orbit 42375

Creation date: 2024-06-27T22:39:34.348942
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C06_010T01_9000005800_42375cztM0_level2.fits modeM0/AS1C06_010T01_9000005800_42375cztM0_level2_quad_clean.evt
Size (bytes)339,937,92083,404,800
Size324.2 MB 79.5 MB
Events in quadrant A2,722,575575,782
Events in quadrant B2,427,954570,987
Events in quadrant C2,480,964557,645
Events in quadrant D4,562,088470,352

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111812
B0108132
C0105082
D0170616

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5002110.219912%
B5002521.039584%
C5002140.279888%
D500161712.337532%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7034 5003 5 5 0.07% 0.10%
B 7034 5003 23 23 0.33% 0.46%
C 7034 5003 5 5 0.07% 0.10%
D 7032 5001 488 488 6.94% 9.76%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 601637 5447.05 537 526 110.4
A 13 6 19181 169.04 537 526 110.4
A 13 254 8071 68.37 537 526 110.4
B 5 172 70361 689.6 531 517 101.3
B 4 81 68181 668.08 531 517 101.3
B 3 112 58423 571.73 531 517 101.3
C 15 214 212033 1726.46 530 534 122.5
C 14 254 67524 546.84 530 534 122.5
C 15 159 32512 261.03 530 534 122.5
D 12 233 1046916 8627.62 496 482 121.3
D 1 52 439429 3619.02 496 482 121.3
D 1 47 264460 2176.44 496 482 121.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter